The Reds claimed a 2-0 win over Wigan Athletic, courtesy of early strikes by Paul Glatzel and Bobby Duncan, and will now face Bury away from home in the quarter-finals.
Lewtas insisted his players will not stray from their mentality so far – that of looking no further than the next round of the competition – but welcomed the chance of going for silverware.
Read his post-match verdict in full below…
On the difficulty of the game…
I said all week and before the game that I knew how tough it would be.